科技行者

行者学院 转型私董会 科技行者专题报道 网红大战科技行者

知识库

知识库 安全导航

至顶网网络频道恢复CISCO的FLASH方法一

恢复CISCO的FLASH方法一

  • 扫一扫
    分享文章到微信

  • 扫一扫
    关注官方公众号
    至顶头条

如果你不小心使用了命令erase flash 那么发生什么就可想而知了。因此,建议在你拿到路由器等网络设备时 最好先将它的IOS等操作系统备份出来,以备万一!

作者:zdnet安全频道 来源:论坛整理 2008年11月17日

关键字: CISCO

  • 评论
  • 分享微博
  • 分享邮件

  如果你不小心使用了命令erase flash 那么发生什么就可想而知了。因此,建议在你拿到路由器等网络设备时 最好先将它的IOS等操作系统备份出来,以备万一!

  本篇主要介绍通过Xmodem上传IOS的过程(以2610为例,不过这个方法用在其他设备上没什么太大区别)

  准备工作,只要有Cisco原配的线缆就可以(注:Xmodem与实际的modem没有任何联系 只是一个传输协议 数据是通过终端的串口和路由器的Console口灌进去的)

  在没有IOS的情况下 系统只能进入Rommon状态,在这个状态下只能见到如下命令:

  rommon 8 > ?
   alias set and display aliases command
   boot boot up an external process
   break set/show/clear the breakpoint
   confreg configuration register utility
   cont continue executing a downloaded image
   context display the context of a loaded image
   cookie display contents of cookie PROM in hex
   dev list the device table
   dir list files in file system
   dis display instruction stream
   dnld serial download a program module
   frame print out a selected stack frame
   help monitor builtin command help
   history monitor command history
   meminfo main memory information
   repeat repeat a monitor command
   reset system reset
   set display the monitor variables
   stack produce a stack trace
   sync write monitor environment to NVRAM
   sysret print out info from last system return
   tftpdnld tftp image download
   unalias unset an alias
   unset unset a monitor variable
   xmodem x/ymodem image download

  在这个模式下,输入Xmodem

  rommon 9 > xmodem

  会提示如下警告:

  WARNING: All existing data in bootflash will be lost!
   Invoke this application only for disaster recovery.
   Do you wish to continue? y/n [n]: y
   Ready to receive file ? ...

  然后在超级终端的传送栏目=> 选择发送选项 => 再选择Xmodem 并指明IOS所在的路径即开始上传IOS,等待时间很长,视IOS的大小和传输速度。对于初次做IOS上传,建议不要去修改什么传输速率。传完以后 对整个系统初始化 界面如下:

  Erasing flash at 0x603c0000
   program flash location 0x602f0000
   Download Complete!
   program load complete, entry point: 0x80008000, size: 0x2f0074
   Self decompressing the image : #################################################
   ################################################################################
   ################################################################################
   ################################################################# [OK]
  
   Restricted Rights Legend
  
   Use, duplication, or disclosure by the Government is
   subject to restrictions as set forth in subparagraph
   (c) of the Commercial Computer Software - Restricted
   Rights clause at FAR sec. 52.227-19 and subparagraph
   (c) (1) (ii) of the Rights in Technical Data and Computer
   Software clause at DFARS sec. 252.227-7013.
  
   cisco Systems, Inc.
   170 West Tasman Drive
   San Jose, California 95134-1706
  
   Cisco Internetwork Operating System Software
   IOS (tm) C2600 Software (C2600-I-M), Version 11.3(6)T, RELEASE SOFTWARE (fc1)
   Copyright (c) 1986-1998 by cisco Systems, Inc.
   Compiled Tue 06-Oct-98 18:42 by ccai
   Image text-base: 0x80008084, data-base: 0x80554578
  
   cisco 2610 (MPC860) processor (revision 0x202) with 12288K/4096K bytes of memory
   .
   Processor board ID JAB0233005Z (3677578902)
   M860 processor: part number 0, mask 32
   Bridging software.
   X.25 software, Version 3.0.0.
   1 Ethernet/IEEE 802.3 interface(s)
   1 Serial network interface(s)
   32K bytes of non-volatile configuration memory.
   4096K bytes of processor board System flash (Read/Write)
  
   Press RETURN to get started!
  
  
   00:00:06: %LINK-3-UPDOWN: Interface Ethernet0/0, changed state to up
   00:00:06: %LINK-3-UPDOWN: Interface Serial0/0, changed state to up
   00:00:06: %SYS-5-CONFIG_I: Configured from memory by console
   00:00:06: %SYS-5-RESTART: System restarted --
   Cisco Internetwork Operating System Software
   IOS (tm) C2600 Software (C2600-I-M), Version 11.3(6)T, RELEASE SOFTWARE (fc1)
   Copyright (c) 1986-1998 by cisco Systems, Inc.
   Compiled Tue 06-Oct-98 18:42 by ccai
   00:00:07: %LINEPROTO-5-UPDOWN: Line protocol on
   WL_bank_2610_2>Interface Ethernet0/0, changed state to up
   00:00:07: %LINEPROTO-5-UPDOWN: Line protocol on Interface Serial0/0, changed sta
   te to up
   00:00:07: %LINEPROTO-5-UPDOWN: Line protocol on Interface Loopback0, changed sta
   te to up
   2610_2>

 

    • 评论
    • 分享微博
    • 分享邮件
    邮件订阅

    如果您非常迫切的想了解IT领域最新产品与技术信息,那么订阅至顶网技术邮件将是您的最佳途径之一。

    重磅专题
    往期文章
    最新文章